Correct answer: B). A statement of fact that is generally accepted to be true and universal because it has always been observed to be true.
A scientific law may be defined as the something that appears to be true and is universally applicable. Scientific laws do not explain why the observed events happen, but it only states that the event occurs in the same way over and over.
Example of scientific law is a law of gravity. Gravity is always there and it always works in the same manner.
Other examples include newton's law of motion, which states how the things move.